HD 149837

HD 149837
Observation data; Epoch J2000 Equinox J2000
Constellation	Ara
Right ascension	16h 40m 50.48446s
Declination	−60° 26′ 47.2030″
Apparent magnitude (V)	6.18
Characteristics
Spectral type	F6V
Apparent magnitude (B)	6.660
Apparent magnitude (V)	6.223
Apparent magnitude (J)	5.217
Apparent magnitude (H)	4.969
Apparent magnitude (K)	4.886
B−V color index	+0.17
Astrometry
Radial velocity (Rv)	3.9±0.2 km/s
Proper motion (μ)	RA: +59.02 mas/yr ; Dec.: –74.20 mas/yr
Parallax (π)	31.92 ± 0.53 mas
Distance	102 ± 2 ly ; (31.3 ± 0.5 pc)
Details
HD 149837 A
Mass	1.25 M☉
Luminosity	2.8 L☉
Surface gravity (log g)	4.16 cgs
Temperature	6,354 K
Metallicity [Fe/H]	−0.08 dex
Age	2.7 Gyr
HD 149837 B
Mass	0.79 M☉
Other designations
	CD–60° 6381, HD 149837, HIP 81657, HR 6177, SAO 253651.
Database references
SIMBAD	data

HD 149837 is a binary star in the southern constellation of Ara.

References

^ ^a ^b ^c ^d ^e van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357, S2CID 18759600.
^ ^a ^b Nicolet, B. (1978), "Photoelectric photometric Catalogue of homogeneous measurements in the UBV System", Astronomy and Astrophysics Supplement Series, 34: 1–49, Bibcode:1978A&AS...34....1N
^ ^a ^b ^c ^d Gray, R. O.; et al. (July 2006), "Contributions to the Nearby Stars (NStars) Project: spectroscopy of stars earlier than M0 within 40 pc-The Southern Sample", The Astronomical Journal, 132 (1): 161–170, arXiv:astro-ph/0603770, Bibcode:2006AJ....132..161G, doi:10.1086/504637, S2CID 119476992
^ Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.
^ ^a ^b Tokovinin, Andrei (April 2014), "From Binaries to Multiples. II. Hierarchical Multiplicity of F and G Dwarfs", The Astronomical Journal, 147 (4): 14, arXiv:1401.6827, Bibcode:2014AJ....147...87T, doi:10.1088/0004-6256/147/4/87, S2CID 56066740, 87
^ McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–57, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x, S2CID 118665352
^ Holmberg, J.; Nordström, B.; Andersen, J. (July 2009), "The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics", Astronomy and Astrophysics, 501 (3): 941–947, arXiv:0811.3982, Bibcode:2009A&A...501..941H, doi:10.1051/0004-6361/200811191, S2CID 118577511

External links

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[vanLeeuwen2007-1] van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357, S2CID 18759600.

[aass34_1-2] Nicolet, B. (1978), "Photoelectric photometric Catalogue of homogeneous measurements in the UBV System", Astronomy and Astrophysics Supplement Series, 34: 1–49, Bibcode:1978A&AS...34....1N

[aj132_1_161-3] Gray, R. O.; et al. (July 2006), "Contributions to the Nearby Stars (NStars) Project: spectroscopy of stars earlier than M0 within 40 pc-The Southern Sample", The Astronomical Journal, 132 (1): 161–170, arXiv:astro-ph/0603770, Bibcode:2006AJ....132..161G, doi:10.1086/504637, S2CID 119476992

[Gontcharov-4] Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.

[aj147_4_87-5] Tokovinin, Andrei (April 2014), "From Binaries to Multiples. II. Hierarchical Multiplicity of F and G Dwarfs", The Astronomical Journal, 147 (4): 14, arXiv:1401.6827, Bibcode:2014AJ....147...87T, doi:10.1088/0004-6256/147/4/87, S2CID 56066740, 87

[Mcdonald2012-6] McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–57, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x, S2CID 118665352

[cgssn09-7] Holmberg, J.; Nordström, B.; Andersen, J. (July 2009), "The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics", Astronomy and Astrophysics, 501 (3): 941–947, arXiv:0811.3982, Bibcode:2009A&A...501..941H, doi:10.1051/0004-6361/200811191, S2CID 118577511

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Observation data Epoch J2000 Equinox J2000
Constellation	Ara
Right ascension	16^h 40^m 50.48446^s^[1]
Declination	−60° 26′ 47.2030″^[1]
Apparent magnitude (V)	6.18^[2]
Characteristics
Spectral type	F6V^[3]
Apparent magnitude (B)	6.660
Apparent magnitude (V)	6.223
Apparent magnitude (J)	5.217
Apparent magnitude (H)	4.969
Apparent magnitude (K)	4.886
B−V color index	+0.17^[2]
Astrometry

Radial velocity (R_v)	3.9±0.2^[4] km/s
Proper motion (μ)	RA: +59.02^[1] mas/yr Dec.: –74.20^[1] mas/yr
Parallax (π)	31.92 ± 0.53 mas^[1]
Distance	102 ± 2 ly (31.3 ± 0.5 pc)

Details
HD 149837 A
Mass	1.25^[5] `M`_☉
Luminosity	2.8^[6] `L`_☉
Surface gravity (log g)	4.16^[3] cgs
Temperature	6,354^[3] K
Metallicity [Fe/H]	−0.08^[3] dex
Age	2.7^[7] Gyr
HD 149837 B
Mass	0.79^[5] `M`_☉
Other designations
CD–60° 6381, HD 149837, HIP 81657, HR 6177, SAO 253651.
Database references
SIMBAD	data